Loop antennas molded into joints of flexible pipe, e.g. for monitoring fluid flow from tanker, comprise air-cored coils placed at end of pipe within metallic couplings

摘要

Two air-cored loop antennas (1) are placed at respective ends of the flexible pipe carrying the fluid to be delivered. The coils are wound using insulated copper wire and are inserted by a molding process within the sealing joint (3) of the metallic pipe coupler. A single element is thus formed which combines information transmission and sealing functions.